Privacy.

Who we are

Side by Side makes Tandem. We are a small company in Rotterdam, the Netherlands, and we decide what happens with the data on this page.

• Registered name: swaile music technology (trading as Side by Side)
• Chamber of Commerce (KvK) number: 62030280
• Address: Groene Hilledijk 261 B2, 3073 AK Rotterdam, the Netherlands
• Email: hello@sidebyside.audio

This site

No analytics, no advertising, no trackers, no cookies. The fonts come from the site itself, not from someone else's server.

The pages are served by Cloudflare. Like any web server it sees your IP address and browser with each request, and keeps a log of requests for a few days so we can find out what went wrong when something does.

The download buttons fetch the installer from Cloudflare's storage. Nothing about you is added to that.

Tandem with your own folder

Shared through Dropbox, Google Drive, iCloud Drive or any other folder you sync, Tandem works without an account. Your projects stay on your computer and in that folder. They don't come to us, and the rules of the service you chose apply to that folder.

The app keeps no usage statistics. It talks to our servers only when you sign in to Tandem Sync or send a problem report.

Tandem Sync

Tandem Sync is the part where we host your projects. It starts when you sign in.

Signing in

• Your email address. You type it, we email you a six-digit code, and that's the sign-in. There is no password. The account is kept by Supabase, in the EU (Ireland). The code is sent from codes@sidebyside.audio through Cloudflare.
• Limits against abuse. We count how often codes are asked for, per IP address and per email address. Those counters hold only a scrambled form (a SHA-256 hash), never the address itself, and are deleted after a day.
• A check that your address can get mail. We look up the part after the @ in DNS. Only that part is sent.

Your projects

• The files: Live sets, audio, samples and anything else in the project folder. They are stored in Cloudflare R2, in a bucket that stays within the EU.
• The records around them: the project's name, who is in it, every save with its note, who has the set, and what each computer reported for the ready check (its name, your name in Tandem, installed plugins and Live versions). These are kept in Cloudflare's databases. The list of members and files is in western Europe.
• Invite links and download links: we keep only a hash of the secret in the link.

The people in a project see each other's email address, name, computer name and saves. Nobody outside it does.

We store your projects so that you and the people you invite can get them. We don't sell them, share them, listen in, or use them to train anything.

The web page

On sync.sidebyside.audio you can browse your projects in a browser. It remembers that you're signed in using your browser's own storage on your computer. No cookies.

Deleting

• A project. When its owner deletes it, it is hidden from everyone at once. For 7 days the owner can bring it back. After that its files, records and member list are removed for good. The owner can also choose to delete it right away.
• Leaving. If you were invited, you can leave a project. You stop seeing it there; the copy on your computer stays yours.
• Your account. Write to hello@sidebyside.audio from the address you sign in with and we remove the account and everything you own on Tandem Sync. There is no button for this in the app yet.

Copies on your own computer, and on the computers of people who already got the project, are not ours to delete.

Problem reports

From the app. Report a problem sends what you write, plus a description of the situation: the app version, your operating system, your computer's name and your name in Tandem, installed plugins and Live versions, and for the project you report about its name, recent saves with their notes, whose turn it is, names of files that are missing, and a summary of the set (tracks and devices). Never audio, and never the project files themselves.

From the web form. What you type, and your email address if you leave one so we can answer. To cap how many reports one sender can make in an hour, we keep a salted hash of the IP address, not the address.

Testers. If you joined the test through an invite, we keep your email address, name and the setup you filled in (computer, Live version and edition, sync service).

Reports are stored with Cloudflare. We keep them while they help us fix Tandem. Ask and we remove yours.

Email to us

Mail to hello@sidebyside.audio arrives in a Google mailbox. We keep a short summary of each conversation as a support ticket, with your address, so nothing gets lost.

Payments

Nothing can be bought yet. When paid plans open, Paddle will be the seller: it takes the payment and writes the invoice, under its own privacy policy. We never see your card. We keep which plan you have, whether a payment failed, and Paddle's number for you as a customer.

Who else handles it

• Cloudflare: serves the site, stores projects and reports, sends the sign-in codes.
• Supabase: keeps the accounts (email address and sign-ins), in the EU.
• Google: the mailbox behind hello@.
• Paddle: payments, once they open.

They work for us under their own agreements and may not use your data for themselves. Some are American companies, so data can be handled outside the EU under the safeguards EU law asks for.

Why we may

We keep your address and projects because that's what running Tandem Sync for you takes. The abuse limits and server logs are there to keep it working and safe. Reports and mail we keep because you sent them to us to act on.

Your rights

You can ask what we have about you, get a copy, have it corrected or removed, or object to how we use it. Write to hello@sidebyside.audio; we answer within a month.

Not happy with the answer? You can complain to the Dutch data protection authority, the Autoriteit Persoonsgegevens, or to the one in your own country.

Changes

When Tandem starts keeping something new, this page changes first, and the date at the top with it.